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Applied and Environmental Microbiology, March 2005, p. 1254-1258, Vol. 71, No. 3
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.3.1254-1258.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Degradation of 1,4-Dioxane and Cyclic Ethers by an Isolated Fungus

Kunichika Nakamiya,* Syunji Hashimoto, Hiroyasu Ito, John S. Edmonds, and Masatoshi Morita

National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan

Received 16 August 2004/ Accepted 4 October 2004

By using 1,4-dioxane as the sole source of carbon, a 1,4-dioxane-degrading microorganism was isolated from soil. The fungus, termed strain A, was able to utilize 1,4-dioxane and many kinds of cyclic ethers as the sole source of carbon and was identified as Cordyceps sinensis from its 18S rRNA gene sequence. Ethylene glycol was identified as a degradation product of 1,4-dioxane by the use of deuterated 1,4-dioxane-d8 and gas chromatography-mass spectrometry analysis. A degradation pathway involving ethylene glycol, glycolic acid, and oxalic acid was proposed, followed by incorporation of the glycolic acid and/or oxalic acid via glyoxylic acid into the tricarboxylic acid cycle.

* Corresponding author. Mailing address: Endocrine Disrupters and Dioxins Research Project, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan. Phone: 81 (0) 29 850 2913. Fax: 81 (0) 29 850 2570. E-mail: Nakamiya.Kunichika{at}nies.go.jp.

Applied and Environmental Microbiology, March 2005, p. 1254-1258, Vol. 71, No. 3
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.3.1254-1258.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

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